Vista randomly hangs

I've built a Media PC with Home Premium x64 which works really well, except it randomly hangs when I am not using it.

The whole system locks up, even the clock on the lcd display stops, there is no HD activity etc...

The only way to resolve the problem is to unplug the power lead, leave for about a minute and then start the PC. If I don't unplug the power lead for long enough it will not start.

As you can imaginethis is quite frustrating, particuarly if you have some programs scheduled to reocrd!!

All of the system drivers are upto date and here is the system spec.


System
abit il-80mv
2.1 ghz processor
2gb RAM

Any suggestions??

You are not the only one. I also have random hangs (no BS) even with(out!) all recent OR old drivers (of every hardware!) in EVEN 32 or 64 bits version. Take a look in de admin tools for the logfiles and you'll find 2 main problems (I don't have the details with me now, somthing about Http and something about a security pack kerberos that is NOT needed in Vista).

Clicking on those redirects you to a knowledge base of MS wit all sorts of comments of user having exact the same experiences driving everyone crazy. Before that all my NEW hardware had been exchanged and still it exists.

MS seems to ignore all those uses and even tells to ignore these logfiles / error ("LOL", ignoring an error!) but most of those users even have the newest hardware!
*sight*